William eandall haeeis



`(No Model.)

` W. R. HARRIS.

BELT 0R STRAP FASTBNER.

UNITED STATES PATENT @Erica XVILLIAM RANDALL HARRIS, OF MANCHESTER, COUNTY OF LANCASTER, ENGLAND.

BELT on STRAP FASTENER.

SPECIFICATION forming part of Letters Patent No. 346,747, Cited August 3, 1886- Applicaiion filed rInno l, 1886. Serial No. 203,771.

To all who-7n it may concern:

Be it known thattI, WILLIAM RANDALL HARRIS, a citizen of the United States, at present residing at Manchester, county of Lancaster, England, have invented certain Improvements in Strap-Fasteners, (for which I have Obtained protection in Great Brit-ai n, No. 6,315, dated May 11, 1886,) of which the following is a specilication.

My invention relates to the fasteners adopted for use in attaching together the ends of driving straps or belts, or in attaching together lengths of strapping to forni belts. A Wellknown strapefastener patented by me in Eng land in the year 1867 is furnished with rows of teeth'or spikes, which are caused to penetrate the material of the two belt ends to be connected. To render this fastener more secure I provide clamps, which are hammered or pressed down over the edges of the belt ends.

In the accompanying drawings, Figure l represents an end view of one of my improved belt-fasteners; Fig. 2, a side View of the same. Fig. 3 is a longitudinal section of a belt-joint secured by means of the fastener. Fig. lshows the inside of the joint. Fig. 5 shows the outside or back of the same. Fig. 5A shows a modification. Fig. 6 is a section of a joint suitable for belts which require to be tightened. Fig. 7 is a plan ofthe same; and Figs. 8 and 9 are corresponding views ot' a slight modification.

In Figs. l to 5, ais the back plate of thefastener, and b I; are the teeth or spikes, which proj ect from the concave under side of the said back plate,as is usual in this description of fastener. lIhe clamping parts or clamps which I ernployin accordance with my present invention areindicated bycc. The fastener illustrated in the drawings is supposed to be cast all in one piece, and annealed or softened, as in the ordinary method of making malleable castings. The clamps c c may consist of ribs or webs projecting from the back plate, or of serrated webs, or plates, or of isolated teeth, spikes, or pins. In the example the said clamps consist of isolated or near] yisolated spikes or teeth, which taper both in width and thickness from their connection with the plate to their outer ends,

5o this being the construction and form which I (No model.) Patented in England May 1l, 1886, No. 6,315.

' ends become tightly clamped against the inner surface of the back plate, as clearly indicated in Figs. 3 and 4. The teeth b need not necessarily extending entirely through the material i of the belt. To keep the metal as much as possible from contact with the pulleys or drums when the belt is in use, I prefer to make the back plate a little more concave than in the case of the ordinary or oldform of fastener. In the example, the clamps c are arranged to enter between theteeth b in the inner row of the same, this being the arrangement I prefer. In place of the clamps c being formed as teeth, I may use thin projecting ribs, either plain or serrated at theirouter edges, so as to clear the inner row of teeth b,or suitably-shaped clamps, which can be bent over and down upon the belt ends to clamp the same to the back plate, substantially as indicated in the drawings.

In the modification illustrated by Fig. 5^, the clamps c are not made in one piece with the back plate, but are cast or formed as a separate piece, the back plate being formed with a slot, through which the clamps are passed an enlarged head,c,preventing them from passing entirely through the slot. The clamps, when hammered or pressed down, hold the strap exactly in the same manner as in the previouslydescribed examples. More than one of these separately formed clamps may be applied in the cases of broad fasteners. In any case there may be only one row of the teeth b on each side, as in the case of the fasteners, shown in Fig. 5"; or there may be more than two rows, if considered to be necessary. The fasteners may be made of a suitable material other than malleable cast-iron.

In Figs. 6 and 7 the fastener is intended to be permanently fastened by one end only to ZEOO the belting. One side of the fastener is provided with teeth or spikes, and with lthe clamps c, whereby the fastener is rnily secured to the strap end d. The other side ofthe fastener is provided only with the ordinary teeth Z). In the back plate is formed a slot or opening e, through which the other strap end f, is passed, the teeth b preventing the strap from being drawn out by the strain. When it is desirable to tighten the belt, the end f is drawn farther through the slot and the projecting piece is cut off.

VIn the modification illustrated by Figs. 8 and 9 the part j' of the belt is intended to be punched to suit projecting teeth g g, which enter the holes punched in t-he belt end and keep the said end in piace.

I claim 1. A strap or belt fastener having a back plate, a., holding-teeth b, and clamp c, substantially as and for the purpose set forth.

2. A strap or belt fastener having a back plate provided with teeth to be driven into the substance of the parts to be secured, and clamping-teeth arranged, substantially as described, and adapted to be bent or clamped down upon the ends of the parts to be secured together, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

VILLIAM RANDALL HARRIS.

Vitnesses:

XVM. TURNER, Clerk with IV. H. :Vaudrejh Solcior, BIancleser.

C. CHnnWIoK. 

